Theory Seminar

F(R) Supergravity and Early Universe

by Sergei Ketov (Tokyo Metropolitan University)

Europe/Berlin
313

313

Description
In my talk I consider a new approach to realizing the viable chaotic inflation in supergravity, in four spacetime dimensions. Our approach is based on the new version (or extension) of supergravity that we call F(R) supergravity. The F(R) supergravity may be understood as the N=1 locally supersymmetric extension of f(R) gravity theories. In the first part of my talk I briefly review our motivation (Bag Bang, inflation, High-Energy Physics), and recall the basics of inflation. The Starobinsky model of chaotic inflation is considered in detail, as an example. Next, I outline a construction of F(R) supergravity in superspace, and give some of its applications to the early Universe. In particular, I explain how to embed the Starobinsky model into F(R) supergravity.